Mukilteo in Winter
In winter (December, January and February), Mukilteo sees average daytime highs around 45°F and overnight lows near 38°F, with 24.0 in of precipitation over about 54 wet days across the season. It is the coldest season of the year and the wettest season of the year.
Across winter, daytime highs hold fairly steady around 45°F. The sky is clear or mostly clear about 15% of the time across winter, and the air most often feels dry.
Winter is Mukilteo's weakest season of the year to visit on our travel score. For the whole year in context, see Mukilteo's year-round climate.
- Avg daytime high
- 45°F
- coldest season of the year
- Avg overnight low
- 38°F
- Precipitation
- 24.0 in
- 54 wet days
- Avg wind
- 7 mph
- Travel score
- 0.8
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Mukilteo in Winter
Across winter, daytime highs hold fairly steady around 45°F.
A typical winter day in Mukilteo reaches about 45°F and drops to 38°F overnight. The warmest of the three months is February, the coolest December.
How winter really feels in Mukilteo
Once humidity and wind are folded in, winter brings about 0 days that feel above 90°F and 23 that feel at or below 32°F.
The story in winter is cold — wind chill drags the overnight "feels like" below the raw low.
Mukilteo weather by month
How the three winter months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 45° / 38° | 9.1 | 19.3 | 5 | 8.6 | 0.7 |
| Feb | 47° / 38° | 5.8 | 15.4 | 4.2 | 9.9 | 1.2 |
| Mar | 50° / 40° | 7.0 | 19.1 | 3.1 | 11.6 | 1.8 |
| Apr | 54° / 43° | 5.2 | 16 | 0.8 | 13.4 | 2.8 |
| May | 60° / 47° | 3.5 | 12.3 | 0.1 | 14.9 | 4.5 |
| Jun | 64° / 51° | 3.1 | 10.6 | 0 | 15.7 | 5.6 |
| Jul | 69° / 55° | 1.5 | 6.1 | 0 | 15.4 | 7.3 |
| Aug | 70° / 55° | 1.7 | 6.1 | 0 | 14.1 | 7.4 |
| Sep | 65° / 52° | 3.3 | 9.4 | 0 | 12.4 | 6.1 |
| Oct | 56° / 46° | 7.1 | 15 | 0 | 10.6 | 3.5 |
| Nov | 48° / 41° | 10.0 | 19.3 | 1.9 | 9 | 1.4 |
| Dec | 44° / 38° | 9.1 | 19.1 | 5.3 | 8.2 | 0.5 |
Cloud cover in Winter
The sky is clear or mostly clear about 15% of the time across winter.
Chance of precipitation in Winter
Mukilteo gets around 24.0 in of rain and snow over 54 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 7 mph across winter.
Sunrise & sunset in Winter
Daylight runs from about 8 h 30 min in early December to 10 h 36 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 1.2 kWh/m².
Hazard calendar for Mukilteo
In winter, Mukilteo overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Mukilteo's rainy season runs October–April, when most of the year's rain falls.
Is winter a good time to visit Mukilteo?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a weaker month for outdoor sightseeing in Mukilteo.
What to pack for Mukilteo in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Mukilteo sees daytime highs around 45°F and nights near 38°F. Pack a warm layer and rain gear. Worth having: a heavy coat. About 54 days see rain.
Sea temperature near Mukilteo in Winter
The nearest coast averages about 47°F across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 29 mi away) is warmest in August at about 53°F and coldest in February near 46°F.
The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 46 | 46 | 47 | 48 | 50 | 52 | 53 | 53 | 53 | 50 | 49 | 47 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 46 | Bracing |
| Feb | 46 | Bracing |
| Mar | 47 | Bracing |
| Apr | 48 | Bracing |
| May | 50 | Bracing |
| Jun | 52 | Bracing |
| Jul | 53 | Bracing |
| Aug | 53 | Bracing |
| Sep | 53 | Bracing |
| Oct | 50 | Bracing |
| Nov | 49 | Bracing |
| Dec | 47 | Bracing |
UV index in Mukilteo in Winter
Clear-sky midday UV across winter averages around 1. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Mukilteo peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 18 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 4 | 5 | 7 | 6 | 8 | 6 | 4 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in Mukilteo in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Mukilteo is worst in August — around 20 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 6 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 10 | 12 | 12 | 13 | 11 | 10 | 20 | 18 | 11 | 7 | 6 |
| Level | Good | Good | Moderate | Good | Moderate | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 10 | Good |
| Mar | 12 | Moderate |
| Apr | 12 | Good |
| May | 13 | Moderate |
| Jun | 11 | Good |
| Jul | 10 | Good |
| Aug | 20 | Moderate |
| Sep | 18 | Moderate |
| Oct | 11 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
Where is Mukilteo?
Mukilteo sits at 47.9°N, 122.3°W, 105 ft above sea level, in United States. The nearest listed city is Everett, 5.6 mi away.
Topography around Mukilteo
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Mukilteo.
Within 2 miles, the terrain around Mukilteo has only modest variations in elevation — a maximum elevation change of 630 ft around an average of 157 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 682 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,589 ft.
The land around Mukilteo is covered by water (60%) and trees (24%) within 2 miles, water (41%) and trees (37%) within 10 miles, and trees (67%) and water (21%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Mukilteo (47.9445°, -122.3046°, elevation 105 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.